Engine Mechanical Specifications for Chevrolet Chevy P42 Commercial Chassis 1997
Application | Specifications |
|---|---|
Displacement | 6.5L |
RPO | L65 |
Type | 90 degree V8 diesel |
Bore | 103 mm |
Stroke | 97 mm |
Compression Ratio | 21.3:1 |
Firing Order | 1-8-7-2-6-5-4-3 |
Oil Pressure | 10 psi at idle (hot); 40-45 psi at 2000 RPM |
Cylinder Bore Out-of-Round¹ | 0.02 mm (Maximum) |
Cylinder Bore Taper (Thrust Side)¹ | 0.02 mm (Maximum) |
Piston to Bore Clearance (Bohn Pistons 1-6) | 0.094-0.120 mm |
Piston to Bore Clearance (Bohn Pistons 7-8) | 0.107-0.133 mm |
Piston Ring Compression Groove Clearance (Top) | Keystone-type ring |
Piston Ring Compression Groove Clearance (Second) | 0.039-0.079 mm |
Piston Ring Compression Gap² (Top) | 0.26-0.51 mm |
Piston Ring Compression Gap² (Second) | 0.75-1.00 mm |
Piston Ring Oil Groove Clearance | 0.040-0.090 mm |
Piston Ring Oil Gap | 0.25-0.51 mm |
Piston Pin Diameter | 30.9961-31.0039 mm |
Piston Pin Clearance (Piston Pin to Piston Bore) | 0.0101-0.0153 mm |
Piston Pin Fit in Rod (Piston Pin to Rod Pin Bushing) | 0.0081-0.0309 mm |
Crankshaft Main Journal Taper | 0.005 mm (Maximum) |
Crankshaft Main Journal Out-of-Round | 0.005 mm (Maximum) |
Crankshaft Main Bearing Clearance (#1, #2, #3 and #4) | 0.045-0.083 mm |
Crankshaft Main Bearing Clearance (#5) | 0.055-0.093 mm |
Crankshaft End Play | 0.10-0.25 mm |
Crankshaft Crankpin Diameter | 60.913-60.939 mm |
Crankshaft Crankpin Taper | 0.005 mm (maximum) |
Crankshaft Crankpin Out-of-Round | 0.005 mm (maximum) |
Crankshaft Rod Bearing Clearance (Select Fit) | 0.045-0.100 mm |
Crankshaft Rod Side Clearance | 0.17-0.63 mm |
Camshaft Lobe Lift ± 0.05 (Intake and Exhaust) | 7.133 mm |
Journal Diameter (#1, #2, #3 and #4) | 54.970-55.025 mm |
Journal Diameter (#5) | 50.970-51.025 mm |
Journal Clearance (#1, #2, #3 and #4) | 0.025-0.118 mm |
Journal Clearance (#5) | 0.020-0.113 mm |
Camshaft End Play | 0.051-0.305 mm |
Valve Lifter | Hydraulic roller |
Valve Rocker Arm Ratio | 1.5:1 |
Valve Lash (Intake and Exhaust) | Not adjustable |
Valve Protrusion (Intake) (Negative because valve is recessed in head) | -0.034 mm |
Valve Protrusion (Exhaust) (Negative because valve is recessed in head) | -0.048 mm |
Valve Face Angle (Intake and Exhaust) | 45° |
Valve Seat Angle (Intake and Exhaust) | 46° |
Valve Seat Runout (Intake and Exhaust) | 0.05 mm |
Valve Seat Width (Intake) | 0.89-1.53 |
Valve Seat Width (Exhaust) | 1.57-2.36 |
Valve Stem Clearance (Intake) | 0.026-0.069 |
Valve Stem Clearance (Exhaust) | 0.026-0.069 |
Valve Spring Pressure (Closed) Newtons @ mm | 356 N @ 46.0 mm |
Valve Spring Pressure (Open) Newtons @ mm | 1025 N @ 35.3 mm |
Valve Spring Installed Height | 46 mm |
Timing Chain Free Play (New Chain) | 12.7 mm (0.500 in) |
Timing Chain Free Play (Used Chain) | 20.3 mm (0.800 in) |
¹ Add 0.013 mm to cylinder bore diameters in order to determine proper bore size for cylinders #7 and #8. ² Ring end gap specifications are for new bores. Worn bores will generate larger ring end gaps. | |
